According to Gruber, Karl Mauracher, an organ builder who serviced the instrument at the Obendorf church, was enamoured with the song, and took the composition home with him to the Zillertal. From there, two travelling families of folk singers, the Strassers and the Rainers, included the tune in their shows. The Rainers were already singing it around Christmas 1819, and once performed it for an audience that included Franz I of Austria and Alexander I of Russia, as well as making the first performance of the song in the U. S. , in New York City in 1839. By the 1840s the song was well known in Lower Saxony and was reported to be a favourite of Frederick William IV of Prussia. During this period, the melody changed slightly to become the version that is commonly played today.